* {
      margin: 0;
      padding: 0;
      box-sizing: border-box
    }

    :root {
      --gray: #b1b1b1;
      --ink: #1a1208;
      --paper: #f5f0e8;
      --paper-contrast: #f5f0e8;
      --paper2: #ede8dc;
      --paper3: #e4ddd0;
      --red: #c0392b;
      --red-dim: #f0ddd9;
      --muted: #443c32;
      --border: #d4cdc0;
      --mono: 'IBM Plex Mono', monospace;
      --serif: 'Fraunces', serif;
    }

    [data-theme="dark"] {
      --gray: #b1b1b1;
        --ink: #f5f0e8;
        --paper: #0f0a05;
        --paper-contrast: #423b35;
        --paper2: #181108;
        --paper3: #221810;
        --red: #e85a4f;
        --red-dim: #2a1814;
        --muted: #d8d7d5;
        --border: #3a3020;
      }

    html {
      font-size: 10px;
      scroll-behavior: smooth
    }

    body {
      background: var(--paper);
      color: var(--ink);
      font-family: var(--mono);
      overflow-x: hidden
    }

    #progress {
      position: fixed;
      top: 0;
      left: 0;
      height: 3px;
      background: var(--red);
      z-index: 1000;
      transition: width .1s;
      width: 0
    }

    nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 24px 64px;
      background: rgba(245, 240, 232, 0.96);
      border-bottom: 1px solid var(--border);
      backdrop-filter: blur(8px);
    }

    .logo {
      font-family: var(--serif);
      font-size: 2.1rem;
      font-weight: 900;
      color: var(--ink);
      letter-spacing: -1.5px
    }

    .logo em {
      color: var(--red);
      font-style: normal
    }

    .nav-tag {
      font-size: 1.1rem;
      color: var(--muted);
      letter-spacing: 2.5px
    }

    #hero {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 0 64px 180px;
      position: relative;
      overflow: hidden
    }

    .hero-bg-text {
      position: absolute;
      top: -40px;
      left: -10px;
      font-family: var(--serif);
      font-size: 38vw;
      font-weight: 900;
      color: var(--paper2);
      line-height: 1;
      pointer-events: none;
      user-select: none;
      z-index: 0;
      white-space: nowrap;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      max-width: 920px
    }

    .hero-eyebrow {
      font-size: 1.15rem;
      color: var(--red);
      letter-spacing: 4px;
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      gap: 16px;
    }

    h1 {
      font-family: var(--serif);
      font-size: clamp(5.8rem, 11vw, 10.5rem);
      font-weight: 900;
      line-height: .9;
      color: var(--ink);
      margin-bottom: 36px;
      letter-spacing: -4px;
    }

    h1 .accent {
      color: var(--red)
    }

    .hero-desc {
      font-size: 1.55rem;
      line-height: 1.75;
      color: var(--muted);
      max-width: 620px;
      margin-bottom: 48px;
    }

    .hero-ctas {
      display: flex;
      gap: 25px;
      /* flex-wrap: wrap; */
    }
    
    .term {
      background: var(--ink);
      border-radius: 6px;
      overflow: hidden;
      margin: 32px 0;
      font-size: 1.18rem;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3)
    }

    .term-bar {
      background: #2d2416;
      padding: 12px 20px;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 1px solid #3a3020
    }

    .td {
      width: 11px;
      height: 11px;
      border-radius: 50%
    }

    .td1 {
      background: #ff5f57
    }

    .td2 {
      background: #febc2e
    }

    .td3 {
      background: #28c840
    }

    .term-lbl {
      margin-left: auto;
      font-size: 1rem;
      color: #5a5040
    }

    .term-body {
      padding: 28px 32px;
      line-height: 1.85;
      height: 480px;
      overflow-y: auto;
      background: #1f1910
    }

    .tc {
      color: #a8d08d
    }

    .tw {
      color: #9b9996
    }

    .te {
      color: #ffffff
    }

    .ti {
      color: #fcfcfc
    }

    .tn {
      color: #c8bfa8
    }

    .tl {
      display: block;
      margin-bottom: 4px
    }

    .section {
      position: relative;
      padding: 140px 64px;
      border-top: 1px solid var(--border)
    }

    .section-inner {
      max-width: 1240px;
      margin: 0 auto
    }

    .phase-tag {
      font-size: 1.1rem;
      color: var(--muted);
      letter-spacing: 3px;
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .phase-tag::after {
      content: '';
      flex: 1;
      height: 1px;
      background: var(--border);
      max-width: 160px
    }

    h2 {
      font-family: var(--serif);
      font-size: clamp(4.2rem, 8vw, 9rem);
      font-weight: 900;
      line-height: .92;
      letter-spacing: -3px;
      color: var(--ink);
      margin-bottom: 20px;
    }

    .section-sub {
      font-size: 1.45rem;
      color: var(--muted);
      margin-bottom: 60px;
      letter-spacing: 0.5px
    }

    .attack-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      margin-top: 40px
    }

    .attack-card {
      border: 1px solid var(--border);
      background: var(--paper);
      padding: 32px;
      position: relative;
      transition: all .4s;
    }

    .attack-card:hover {
      border-color: var(--grey);
      background: var(--paper2);
      transform: translateY(-4px)
    }

    .atk-method {
      color: var(--red);
      font-size: 1.1rem;
      letter-spacing: 2px;
      margin-bottom: 8px
    }

    .atk-name {
      font-size: 1.65rem;
      font-weight: 600;
      line-height: 1.2;
      margin-bottom: 18px
    }

    .atk-snippet {
      background: var(--paper3);
      padding: 16px 20px;
      border-left: 4px solid var(--red);
      font-size: 1.05rem;
      line-height: 1.7;
      white-space: pre-wrap;
      margin: 16px 0
    }

    .atk-result {
      line-height: 1.75;
      color: var(--muted)
    }

    .svc-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
      gap: 28px;
      margin-top: 50px
    }

    .svc-card {
      border: 1px solid var(--border);
      background: var(--paper);
      padding: 36px;
      transition: all .4s;
    }

    .svc-card:hover {
      border-color: var(--red);
      transform: translateY(-6px)
    }

    .svc-num {
      font-size: 1.1rem;
      color: var(--red);
      margin-bottom: 12px;
      letter-spacing: 2px
    }

    .svc-name {
      font-family: var(--serif);
      font-size: 2.4rem;
      font-weight: 700;
      margin-bottom: 16px
    }

    .svc-desc {
      line-height: 1.75;
      color: var(--muted)
    }

    .result-box {
      border: 2px solid var(--red);
      background: var(--red-dim);
      padding: 32px;
      margin: 40px 0
    }

    .result-title {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--red);
      margin-bottom: 12px
    }

    .result-body {
      font-size: 1.25rem;
      line-height: 1.8
    }

    footer {
      padding: 40px 64px;
      border-top: 1px solid var(--border);
      background: var(--paper);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.1rem;
      color: var(--muted)
    }